The safety relief valve in an air brake system releases air if necessary to prevent pressure in the system from becoming too high. If the valve starts releasing air, there is something wrong. Have a mechanic fix the problem.

There is something wrong with the brakes.

You should not be concerned as this is a normal process.

There is something wrong with the brakes.

When parking on a level surface, you should use wheel chocks. If the vehicle is not equipped with spring brakes, this is essential to prevent the trailer from moving.

Use wheel chocks to prevent your vehicle from moving.

Use wheel chocks, but only if you have applied the parking brake.

In an air brake system, the air compressor pumps air into the air storage tanks. The air compressor is controlled by the air compressor governor.

It pumps air into the air storage tanks.

It moves air to the back of the truck.

The air storage tanks in an air brake system store compressed air to be used for braking. They hold enough air for the brakes to still be used several times if the compressor stops working.

Hold enough air for the brakes to be used several times if the compressor stops working.

Hold only enough air for one braking cycle.

Hold enough air for the brakes to be used several times if the compressor stops working.

Do not hold air unless there is an emergency.

If the low air pressure warning signal comes on while you are operating a vehicle with air brakes, you should stop and safely park the vehicle as soon as possible. It is essential that you are able to stop safely while you still have some braking power remaining.

Test the brakes while driving, but continue driving if nothing seems wrong.

Drive with the hazard lights activated.

Air Brakes Endorsement Test | New Mexico 2024 #1 Page 4 of 4

Train for FREE online with our New Mexico CDL air brake test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a NM Class A/Class B driver license in 2024, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that the requirements for CDL may vary from state to state.

Number of Question 25

Passing Score 20

Number of Tests 20

Air Brakes Endorsement Test | New Mexico 2024 #1 Page 4 of 4

19 . Which of the following is not part of a vehicle’s air brake system?

20 . If the safety relief valve in an air brake system is releasing air:

21 . When parked on a flat surface, you should:

22 . What does an air compressor do in an air brake system?

23 . The air storage tanks:

24 . What can happen if the air pressure gets too low in an air brake system?

25 . If the low air pressure warning signal comes on in a vehicle with air brakes, the driver should:

See the exact questions that will be on the 2024 DMV exam.

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